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VirtualScroller: do not crash if ref is unset

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Liam Fitzgerald 2021-04-29 14:33:26 +10:00
parent 2705f157c0
commit dbf8c2afb9
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GPG Key ID: D390E12C61D1CFFB
1 changed files with 5 additions and 0 deletions
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5
pkg/interface/src/views/components/VirtualScroller.tsx
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@ -504,6 +504,11 @@ export default class VirtualScroller<T> extends Component<VirtualScrollerProps<T
this.savedIndex = bottomIndex;
const ref = this.childRefs.get(bottomIndex.toString())!;
if(!ref) {
this.saveDepth--;
log('bail', 'missing ref');
return;
}
const { offsetTop } = ref;
this.savedDistance = topSpacing - offsetTop
}